CN114755742A - Orientation detection while drilling data synchronization method and device - Google Patents

Abstract

The application provides a method and equipment for synchronizing orientation detection data while drilling, which comprises the following steps: the control module starts a timer to record first time according to a measurement starting command sent by the tool face angle measurement module, and sends a detection signal acquisition starting command to the detection signal acquisition module; the detection signal acquisition module performs parameter configuration according to the detection signal acquisition starting command and sends a work starting command to the control module based on a configuration completion state; the control module closes the timer and records second time according to the started working command; and calculating a deviation angle according to the time difference between the first time and the second time, and correcting the tool face angle measuring module based on the deviation angle.

Description

A method and device for synchronizing azimuth detection data while drilling

technical field

The present application relates to the technical field of address exploration, and in particular, to a method and device for synchronizing azimuth detection data while drilling.

Background technique

Logging while drilling is a technique that measures the petrophysical parameters of the surrounding formation in real time while the drill bit is drilling through the formation. LWD plays an increasingly important role in modern oil and gas exploration and development due to its advantages of more realistic data, more timely measurement, and higher measurement accuracy.

Conventional logging-while-drilling tools can realize one-dimensional information detection downhole, and can only obtain the total field curve, which cannot be used for geosteering of complex formations. However, due to the addition of the azimuth detection module, the measurement results of the azimuth-detection-while-drilling instrument have Azimuth characteristics, real-time measurement of data around the well and obtaining two-dimensional images through the rotation of the drilling tool, so as to accurately locate the reservoir.

The azimuth detection module of the azimuth detection instrument while drilling needs to collect the tool face angle around the well and the corresponding detection data at the same time. Its control circuit is mainly divided into two parts: the tool face angle measurement part and the detection signal acquisition part. The acquisition modules are independent of each other, and it is difficult to achieve precise synchronous control. If the precise control of azimuth detection cannot be realized, it will lead to the dislocation of azimuth detection, so that accurate information of the formation cannot be obtained.

Therefore, how to solve the above problems has become a technical problem to be solved urgently by those skilled in the art.

SUMMARY OF THE INVENTION

The purpose of the embodiments of the present application is to provide a method and device for synchronizing azimuth detection while drilling data, which can at least solve the above problems.

A first aspect of an embodiment of the present application provides a method for synchronizing azimuth-while-drilling detection data, including: a control module starts a timer to record the first time according to a start measurement command sent by a tool face angle measurement module, and collects the first time from the detection signal. The module sends a start detection signal acquisition command;

The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion state;

The control module closes the timer and records the second time according to the start work command;

The deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle.

In some embodiments, it further includes: the control module sends a start measurement command to the tool face angle measurement module based on the received data acquisition command;

The tool face angle measurement module performs parameter configuration according to the start measurement command, and sends a measurement start command to the control module based on the configuration completion status.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; the same communication protocol is set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein the time difference The conditional expression is satisfied: Tdiff=Tend-Tstart.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; different communication protocols are set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein the time difference Satisfying the conditional formula: Tdiff=Tend-Tstart-Tran2+Tran1, Tran1 indicates the time when the tool face angle measurement module has uploaded the measurement command to the control module and decoding, and Tran2 indicates that the detection signal acquisition module upload has started to work Time of command to the control module and decoding.

In some embodiments, the deviation angle is denoted as θ, and the deviation angle θ satisfies the conditional formula: θ=ωt, where ω is the angular velocity, and t=Tdiff.

In some embodiments, the calibrating the tool face angle measurement module based on the deviation angle includes:

Based on the data uploaded by the tool face angle measurement module within a preset time, the θ angle is synchronously subtracted for correction, so as to realize the synchronization of the tool face angle data and the detection signal data.

A second aspect of the embodiments of the present application provides an azimuth-while-drilling detection device, the azimuth-while-drilling detection device includes a control module, a tool face angle measurement module, and a detection signal acquisition module; wherein,

The control module starts the timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal acquisition command to the detection signal acquisition module;

The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion state;

The control module closes the timer and records the second time according to the start work command;

The deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle.

In some embodiments, the control module sends a start measurement command to the tool face angle measurement module based on the received data collection command; the tool face angle measurement module configures parameters according to the start measurement command, and sends the control module based on the configuration completion status. Send the measurement started command.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; the same communication protocol is set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein the time difference The conditional expression is satisfied: Tdiff=Tend-Tstart.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; different communication protocols are set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein the time difference Satisfying the conditional formula: Tdiff=Tend-Tstart-Tran2+Tran1, Tran1 indicates the time when the tool face angle measurement module has uploaded the measurement command to the control module and decoding, and Tran2 indicates that the detection signal acquisition module upload has started to work Time of command to the control module and decoding.

The above-mentioned technical solutions of the present application have the following beneficial technical effects:

A method for synchronizing azimuth-while-drilling detection data provided by the present application includes: a control module starts a timer to record the first time according to a started measurement command sent by a tool face angle measurement module, and sends a detection signal acquisition module to start detection signal acquisition command; the detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion state; the control module closes the timer and records the first work command according to the start work command Two times; calculating the deviation angle according to the time difference between the first time and the second time, and correcting the tool face angle measurement module based on the deviation angle. In the present application, the control module starts a timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal collection command to the detection signal collection module. The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion status. The control module closes the timer and records the second time according to the start work command; wherein, the deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. The application triggers the time recording (the first time and the second time) based on the command, which can accurately record the work end time of the tool face angle measurement module and the work end time of the detection signal acquisition module, so as to accurately calculate the tool face angle measurement The function of collecting the time difference between the module and the detection signal module, and correcting the offset (the deviation angle calculated based on the time difference) in real time, so as to improve the accuracy of azimuth measurement, thereby improving the accuracy of the geosteering tool while drilling.

Description of drawings

1 is a schematic structural diagram of an azimuth-while-drilling detection device provided by an embodiment of the present application;

2 is a schematic flowchart of a method for synchronizing azimuth detection while drilling data provided by an embodiment of the present application;

FIG. 3 is a schematic diagram of a connection between a control module, a tool face angle measurement module, and a detection signal acquisition module provided by an embodiment of the present application.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

The accompanying drawings show a schematic structural diagram of an embodiment of the present application. The figures are not to scale and some details may have been omitted for clarity. The various regions, shapes, and relative sizes and positional relationships between them shown in the figures are only exemplary, and in practice, there may be deviations due to manufacturing tolerances or technical limitations, and those skilled in the art may vary according to actual needs. Regions with different shapes, sizes, and relative positions can be additionally designed.

Obviously, the described embodiments are some, but not all, embodiments of the present application. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

In addition, the technical features involved in the different embodiments of the present application described below can be combined with each other as long as there is no conflict with each other.

The present application will be described in more detail below with reference to the accompanying drawings. In the various figures, like elements are designated by like reference numerals. For the sake of clarity, various parts in the figures have not been drawn to scale.

The measurement accuracy of the azimuth-while-drilling detection instrument is mainly determined by the measurement accuracy of the tool face angle, the acquisition accuracy of the detection signal, and the synchronization degree of the first two parts. With the rapid development of my country's petroleum logging technology, the requirements for the accuracy of logging while drilling tools are getting higher and higher. The maximum drilling speed that the existing downhole detection tools can achieve is 300r/min, and the accuracy of sector division is changed from the original one. 4 sectors developed to 8 sectors, and then to the current 16 sector precision.

Under the requirements of high drilling speed and high precision, it is difficult to meet the requirements of downhole detection accuracy without synchronous processing of tool face angle measurement and detection signal acquisition or only synchronous processing of fixed offset time.

If the measurement accuracy of the tool face angle and the acquisition accuracy of the detection signal meet the requirements, the drilling speed of the downhole tool is up to 200r/min, and the division accuracy of 4 sectors (upper, lower, left and right) is adopted, that is, one sector occupies The rotation angle is 90°. Under the above conditions, the difference between the measurement start time of the tool face angle and the start acquisition time of the detection signal will be greater than 75ms, so that the acquisition signal of this sector will be completely biased to other sectors; if the drilling speed is increased to 300r/min, And the division accuracy of 16 sectors is adopted, that is, the rotation angle occupied by a sector is 22.5°, the difference between the measurement start time of the tool face angle and the start acquisition time of the detection signal only needs to be greater than 12.5ms, and the sector signal can be completed. For the offset of the collected data values, if the synchronous correction processing of the starting time is not performed, the azimuth data measurement deviation will easily occur.

Most of the existing correction schemes are fixed offset time correction methods, that is, the difference between the measurement start time of the tool face angle and the start acquisition time of the detection signal is measured under laboratory conditions, and recorded as a fixed value for calibrating the sector. area deviation. The disadvantage is that the influence of the surrounding environment (such as temperature) on the hardware is not considered, and the deviation cannot be corrected in real time.

In an embodiment of the present application, referring to FIGS. 1-3 , a method for synchronizing azimuth-while-drilling data is provided, including: S101 , the control module starts a timer to record the first measurement command sent by the tool face angle measurement module. After a period of time, send a command to start the detection signal acquisition to the detection signal acquisition module;

S102, the detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion state;

S103, the control module closes the timer and records the second time according to the start work command;

S104: Calculate the deviation angle according to the time difference between the first time and the second time, and correct the tool face angle measurement module based on the deviation angle.

Further, the control module is respectively connected with the tool face angle measurement module and the detection signal acquisition module. Specifically, the control module is respectively connected with the tool face angle measurement module and the detection signal acquisition module through a field bus, and the field bus includes a CAN bus.

In the present application, the control module starts the timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends the detection signal acquisition module a start detection signal acquisition command. The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion status. The control module closes the timer and records the second time according to the start work command; wherein, the deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. The application triggers the time recording (the first time and the second time) based on the command, which can accurately record the work end time of the tool face angle measurement module and the work end time of the detection signal acquisition module, so as to accurately calculate the tool face angle measurement The function of collecting the time difference between the module and the detection signal module, and correcting the offset (the deviation angle calculated based on the time difference) in real time, so as to improve the accuracy of azimuth measurement, thereby improving the accuracy of the geosteering tool while drilling.

In some embodiments, it further includes: S105, the control module sends a start measurement command to the tool face angle measurement module based on the received data acquisition command;

S106, the tool face angle measurement module configures parameters according to the start measurement command, and sends a measurement start command to the control module based on the configuration completion status.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; the same communication protocol is set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff=Tend- Tstart.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; different communication protocols are set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff=Tend- Tstart-Tran2+Tran1, Tran1 means the time when the tool face angle measurement module uploads the start measurement command to the control module and decoding, Tran2 means the time when the detection signal acquisition module uploads the start work command to the control module and decoding.

In some embodiments, the deviation angle is denoted as θ, and the deviation angle θ satisfies the conditional formula: θ=ωt, where ω is the angular velocity, and t=Tdiff.

In some embodiments, the tool face angle measurement module is calibrated based on the deviation angle, including:

Based on the data uploaded by the tool face angle measurement module within the preset time, the θ angle is synchronously subtracted for correction, so as to realize the synchronization of the tool face angle data and the detection signal data.

As shown in FIG. 1 , the present application provides an azimuth detection device while drilling, including an electromagnetic transmitting board, an electromagnetic receiving board (including a detection signal acquisition module), an electromagnetic central control board (including a control module and a tool face angle measurement module) and Power Control Board. Among them, the electromagnetic transmitting board is used for transmitting electromagnetic wave signals, the electromagnetic wave transmitting board generates sinusoidal signals according to the time sequence, and after tuning, the electromagnetic wave signals are sent out through the transmitting antenna. The electromagnetic receiving board is used to receive the electromagnetic wave signal sent by the detection equipment. After the electromagnetic wave signal is reflected by the stratum, after passing through the receiving antenna and tuning, it is converted into an electrical signal and collected. The electromagnetic central control board is responsible for the control of the timing of the electromagnetic transmitting board and the processing of the signals received by the electromagnetic receiving board. At the same time, the electromagnetic central control board also needs to complete the control of the azimuth-while-drilling detection equipment and other logging instruments, as well as the data interaction function between the azimuth-while-drilling detection equipment and the host computer software. The power control board is responsible for supplying power to the electromagnetic transmitting board, the electromagnetic receiving board and the electromagnetic central control board.

In some embodiments, the electromagnetic transmitting board, the electromagnetic receiving board and the electromagnetic central control board all transmit data and commands through the CAN bus. The electromagnetic receiving board includes a detection signal acquisition module, and the electromagnetic central control board includes a control module and a tool face angle measurement module.

Specifically, the azimuth detection equipment provided by the present application includes a tool face angle measurement module and a detection signal acquisition module, wherein the detection signal acquisition module is used to collect electromagnetic wave receiving signals, gamma receiving signals, etc. for detecting formation boundary information and rock formation. sex signal.

Further, the data synchronization method for azimuth detection while drilling of the present application includes:

(1) Set the control module in the electromagnetic central control board to receive and store the tool face angle measurement data and the detection signal acquisition data, wherein the tool face angle measurement data is obtained by the tool face angle measurement module, and the detection signal acquisition data is obtained by the detection signal The acquisition module calculates and obtains, and the detection signal acquisition data includes the amplitude, phase information and gamma count value of the electromagnetic wave signal;

(2) After the control module in the electromagnetic central control board receives the data acquisition command, it first sends a start measurement command to the tool face angle measurement module through communication port 1, and the tool face angle measurement module configures parameters according to the start measurement command. After the configuration of the face angle measurement module is completed, the tool face angle measurement is started directly, and at the same time, the measured command is returned to the electromagnetic central control board through the communication port 1. Among them, the tool face angle measurement module configuration time is recorded as Tmcon, and the tool face angle measurement start time is Mstart;

(3) After the control module in the electromagnetic central control board receives and decodes the started measurement command through the communication port 1, it starts the timer to record the time, which is recorded as the first time Tstart, and sends the detection signal acquisition module through the communication port 2 at the same time. Start the probe signal acquisition command;

(4) After the detection signal acquisition module receives the start detection signal acquisition command, it starts to configure the corresponding channel and receiving mode, and starts to collect detection signals after the configuration is completed, which is denoted as Cstart. Cstart is represented as the starting time point when the detection signal acquisition module starts to collect the detection signal. At the same time, through the communication port 2, the control module in the electromagnetic central control board returns the start work command, and the configuration time of the detection signal acquisition module is recorded as Tccon;

(5) After the control module in the electromagnetic central control board receives and decodes the start work command, it closes the timer, and records the measurement time, which is recorded as the second time Tend;

(6) If the communication protocol set by the control module in the electromagnetic central control board is the same as that of the tool face angle measurement module and the detection signal acquisition module, that is, the protocol of communication port 1 and communication port 2 are the same, then Tdiff=T1; The tool face angle measurement and the detection signal acquisition module are not synchronized, and the tool face angle measurement is prior to the detection signal acquisition. For the convenience of correction, the time difference between Tstart and Tend is recorded, which is recorded as T1=Tend-Tstart;

If the communication method used is different, it can be obtained through Tdiff=T1-Tran2+Tran1, where the time difference between Tran1 and Tran2 is the time difference between the two communication methods to transmit command data; among them, Tran1 indicates that the tool face angle measurement module has uploaded the measurement command and has started The time to the control module and decoding, Tran2 indicates the time when the detection signal acquisition module uploads the start work command to the control module and decoding;

(7) Obtain the rotational angular velocity ωrad/s of the instrument under the preset time (the preset time includes 1s, denoted as Ts), and calculate the deviation angle between the tool face angle and the detection signal according to the formula: θ=ωt. Among them, ω is the angular velocity, t=Tdiff;

(8) Simultaneously subtract the θ angle from the data {TF1, TF2...TFn} (TF measurement angle means that there are n tool face angle data) uploaded by the tool face angle measurement module within the time Ts to obtain {TF1-θ,TF2- θ...TFn-θ}, so as to realize the synchronization of tool face angle data and detection signal data;

(9) For the data measured in the next Ts time, continue to repeat the operation flow of steps (2) to (8), so as to achieve the purpose of synchronizing the real-time tool face angle data with the detection signal data.

In the present application, the control module starts a timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal collection command to the detection signal collection module. The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion status. The control module closes the timer and records the second time according to the start work command; wherein, the deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. The application triggers the time recording (the first time and the second time) based on the command, which can accurately record the work end time of the tool face angle measurement module and the work end time of the detection signal acquisition module, so as to accurately calculate the tool face angle measurement The function of collecting the time difference between the module and the detection signal module, and correcting the offset (the deviation angle calculated based on the time difference) in real time, so as to improve the accuracy of azimuth measurement, thereby improving the accuracy of the geosteering tool while drilling.

A second aspect of the embodiments of the present application provides an azimuth-while-drilling detection device. The azimuth-while-drilling detection device includes a control module, a tool face angle measurement module, and a detection signal acquisition module; wherein,

The control module starts the timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal acquisition command to the detection signal acquisition module;

The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion status;

The control module closes the timer and records the second time according to the start work command;

The deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle.

In the present application, the control module starts a timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal collection command to the detection signal collection module. The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion status. The control module closes the timer and records the second time according to the start work command; wherein, the deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. The application triggers the time recording (the first time and the second time) based on the command, which can accurately record the work end time of the tool face angle measurement module and the work end time of the detection signal acquisition module, so as to accurately calculate the tool face angle measurement The function of collecting the time difference between the module and the detection signal module, and correcting the offset (the deviation angle calculated based on the time difference) in real time, so as to improve the accuracy of azimuth measurement, thereby improving the accuracy of the geosteering tool while drilling.

In some embodiments, the control module sends a start measurement command to the tool face angle measurement module based on the received data acquisition command; the tool face angle measurement module configures parameters according to the start measurement command, and sends the start measurement to the control module based on the configuration completion status. Order.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; the same communication protocol is set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff=Tend- Tstart.

In some embodiments, the first time is marked as Tstart, and the second time is marked as Tend; different communication protocols are set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff=Tend- Tstart-Tran2+Tran1, Tran1 means the time when the tool face angle measurement module uploads the start measurement command to the control module and decoding, Tran2 means the time when the detection signal acquisition module uploads the start work command to the control module and decoding.

In one embodiment, the control module in the electromagnetic central control board is connected with the detection signal acquisition module and the tool face angle measurement module through the CAN bus, wherein the control module ID in the electromagnetic central control board is set to 0x00, and the tool face is set to ID 0x00. The ID of the angle measurement module is 0x01, and the ID of the detection signal acquisition module is 0x02. The detection signal acquisition module and the tool face angle measurement module transmit commands and data to the target ID (control module in the electromagnetic central control board) through the CAN bus.

The specific steps of the synchronization method of the detection signal acquisition data and the tool face angle measurement data are as follows:

(1) After the control module in the electromagnetic central control board receives the azimuth measurement acquisition command sent by the electromagnetic transmission board, it sends the start acquisition command 0x11 to the tool face angle measurement module whose ID is 0x01 through the CAN bus;

(2) The tool face angle measurement module receives the start measurement command, and then configures the measurement sensor. After the configuration is completed, it returns the "tool face angle measurement module" to the control module in the electromagnetic central control board of ID0x00 and has started measurement command 0x12, among which, The tool face angle measurement module configuration time is recorded as Tmcon, and the tool face angle measurement start time is Mstart;

(3) The control module ID0x00 in the electromagnetic central control board receives and decodes the measurement command 0x12 that has started, and records this time as Ttran1, and then starts the timer to record the time, which is recorded as the first time Tstart, and at the same time detects the ID 0x02 The signal acquisition module sends the start detection signal acquisition command 0x21;

(4) After the detection signal acquisition module receives the start detection signal acquisition command, it starts to configure the corresponding channel and receiving mode, and starts to collect detection signals after the configuration is completed, which is denoted as Cstart. Cstart indicates the starting time point when the detection signal acquisition module starts to collect detection signals, and at the same time returns the "detection signal acquisition module" has started to work command 0x22 to the control module ID0x00 in the electromagnetic central control board, where the detection signal acquisition module configures the time Denoted as Tccon;

(5) The control module in the electromagnetic central control board receives the work command 0x22 and decodes it, denoting it as Ttran2, closes the timer, and records the measurement time, denoting it as the second time Tend.

The start time difference between the signal receiving module and the azimuth acquisition module, Tdiff=Cstart-Mstart,

T1=Tend-Tstart=Tdiff-Ttran1+Ttran2;

(6) If the control module of the electromagnetic central control board has the same communication protocol as the tool face angle measurement module and the detection signal acquisition module, therefore, the time of Ttran1 and Ttran2 is the same, then

Tdiff=Cstart-Mstart=Tend-Tstart=T1;

If the communication method used is different, the

Tdiff=T1-Ttran2+Ttran1 (T1=Tend-Tstart), where the time difference between Tran1 and Tran2 is the time difference between the two communication methods to transmit command data; among them, Tran1 indicates that the tool face angle measurement module has uploaded the measurement command to the control module. and decoding time, Tran2 indicates the time when the detection signal acquisition module uploads the start work command to the control module and decodes;

(7) According to the acceleration sensor data in the tool face angle measurement module, calculate and obtain the rotational angular velocity ωrad/s of the instrument under the preset time (the preset time includes 1s, denoted as Ts), and according to the formula: θ=ωt, calculate The deviation angle between the tool face angle data and the probe acquisition data is output. Among them, ω is the angular velocity, t=Tdiff;

(8) Synchronously subtract the θ angle from the data uploaded by the tool face angle measurement module (measurement module) within 1s, so as to realize the synchronization of the tool face angle data and the detection and acquisition data;

(9) For the data measured in the next 1s, continue to repeat the operation process of steps (2) to (8), so as to achieve the purpose of synchronizing the real-time tool face angle data with the electromagnetic acquisition signal data.

In the present application, the control module starts the timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends the detection signal acquisition module a start detection signal acquisition command. The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion status. The control module closes the timer and records the second time according to the start work command; wherein, the deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. The application triggers the time recording (the first time and the second time) based on the command, which can accurately record the work end time of the tool face angle measurement module and the work end time of the detection signal acquisition module, so as to accurately calculate the tool face angle measurement The function of collecting the time difference between the module and the detection signal module, and correcting the offset (the deviation angle calculated based on the time difference) in real time, so as to improve the accuracy of azimuth measurement, thereby improving the accuracy of the geosteering tool while drilling.

Compared with the fixed numerical correction method, the synchronization method adopted in the present application accurately completes the time-sharing control of two independent modules (tool face angle measurement module and detection signal acquisition module) in the measurement process, and can complete its initial The precise measurement of the time difference, combined with the current instantaneous speed, realizes real-time data synchronization, and provides a better solution for the high-precision measurement of the azimuth detection equipment while drilling.

The present invention has been described above with reference to the embodiments of the present invention. However, these examples are for illustrative purposes only, and are not intended to limit the scope of the present invention. The scope of the invention is defined by the appended claims and their equivalents. Without departing from the scope of the present invention, those skilled in the art can make various substitutions and modifications, and these substitutions and modifications should all fall within the scope of the present invention.

Claims (10)

1. a method for synchronizing azimuth detection data while drilling, is characterized in that, comprising: The control module starts the timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal acquisition command to the detection signal acquisition module; The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion state; The control module closes the timer and records the second time according to the start work command; The deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. 2. The method for synchronizing azimuth detection data while drilling according to claim 1, further comprising: The control module sends a start measurement command to the tool face angle measurement module based on the received data acquisition command; The tool face angle measurement module performs parameter configuration according to the start measurement command, and sends a measurement start command to the control module based on the configuration completion status. 3. azimuth detection data synchronization method while drilling according to claim 1, is characterized in that, The first time is marked as Tstart, and the second time is marked as Tend; the same communication protocol is set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff =Tend-Tstart. 4. azimuth detection data synchronization method while drilling according to claim 1, is characterized in that, The first time is marked as Tstart, and the second time is marked as Tend; different communication protocols are set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff =Tend-Tstart-Tran2+Tran1, Tran1 means the time when the tool face angle measurement module uploads the start measurement command to the control module and decoding, Tran2 means the detection signal acquisition module uploads the start work command to the control module Module and decoding time. 5. The method for synchronizing azimuth detection data while drilling according to claim 3 or 4, characterized in that, The deviation angle is denoted as θ, and the deviation angle θ satisfies the conditional formula: θ=ωt, where ω is the angular velocity, and t=Tdiff. 6. The method for synchronizing azimuth-while-drilling data synchronization according to claim 1, wherein the calibration of the tool face angle measurement module based on the deviation angle comprises: Based on the data uploaded by the tool face angle measurement module within a preset time, the θ angle is synchronously subtracted for correction, so as to realize the synchronization of the tool face angle data and the detection signal data. 7. An azimuth-while-drilling detection device, characterized in that the azimuth-while-drilling detection device comprises a control module, a tool face angle measurement module and a detection signal acquisition module; wherein, The control module starts the timer to record the first time according to the started measurement command sent by the tool face angle measurement module, and sends a start detection signal acquisition command to the detection signal acquisition module; The detection signal acquisition module performs parameter configuration according to the start detection signal acquisition command, and sends a start work command to the control module based on the configuration completion state; The control module closes the timer and records the second time according to the start work command; The deviation angle is calculated according to the time difference between the first time and the second time, and the tool face angle measurement module is corrected based on the deviation angle. 8. The azimuth-while-drilling detection device according to claim 7, characterized in that, The control module sends a start measurement command to the tool face angle measurement module based on the received data acquisition command; the tool face angle measurement module configures parameters according to the start measurement command, and sends a start measurement command to the control module based on the configuration completion status . 9. The azimuth-while-drilling detection device according to claim 7, characterized in that, The first time is marked as Tstart, and the second time is marked as Tend; the same communication protocol is set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff =Tend-Tstart. 10. The azimuth-while-drilling detection device according to claim 7, characterized in that, The first time is marked as Tstart, and the second time is marked as Tend; different communication protocols are set between the control module, the tool face angle measurement module and the detection signal acquisition module; wherein, the time difference satisfies the conditional formula: Tdiff =Tend-Tstart-Tran2+Tran1, Tran1 means the time when the tool face angle measurement module uploads the start measurement command to the control module and decoding, Tran2 means the detection signal acquisition module uploads the start work command to the control module Module and decoding time.

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